Year	1=low to 6=high
2005	3.25
2006	3.27027027027027
2007	3.310810810810811
2008	3.3378378378378377
2009	3.3289473684210527
2010	3.3684210526315788
2011	3.4473684210526314
2012	3.5
2013	3.526315789473684
2014	3.526315789473684
2015	3.526315789473684
2016	3.554054054054054
2017	3.526315789473684
2018	3.6216216216216215
2019	3.526315789473684
2020	3.539473684210526
2021	3.527027027027027
2022	3.5
2023	3.513157894736842